EP 0361535 A2 19900404 - A sheet piece consisting of at least three material layers of paper.
Title (en)
A sheet piece consisting of at least three material layers of paper.
Title (de)
Blattmaterial, bestehend aus mindestens drei Papierschichten.
Title (fr)
Elément en forme de feuille consistant en au moins trois couches de matériel de papier.
Publication
Application
Priority
- EP 89119981 A 19861002
- SE 8504567 A 19851003
- SE 8603106 A 19860714
Abstract (en)
A sheet piece intended to form, for example, an encasing wall (53) of a portable container, consisting of a plurality of material layers (54, 55, 56) mainly of paper. The material layers are provided with a large number of localized impressions distributed uniformly over the surface of the layers with spaces in between the impressions. The impressions extend from the principle plane (58, 59, 60) of each layer. The impressions (57, 62) in adjacent layers are, with respect to their positions, displaced relative to one another as viewed in the normal direction of their principle planes (58, 59, 60). This involves that the impressions in one layer are located directly in front of the spaces in adjacent layers. Each of the layers is joined with its adjacent layers by means of an adhesive, whereby a large number of closed cells (64) are created, so that at most two layers are directly joined together with each other.
IPC 1-7
IPC 8 full level
B31B 19/90 (2006.01); B31B 50/86 (2017.01); B65D 30/08 (2006.01); B65D 33/12 (2006.01)
CPC (source: EP US)
B65D 31/04 (2013.01 - EP US); B65D 33/12 (2013.01 - EP US); B31B 70/8134 (2017.07 - EP US); Y10S 493/926 (2013.01 - EP US); Y10T 428/24661 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0217776 A1 19870408; EP 0217776 B1 19900613; AT E53556 T1 19900615; AT E93474 T1 19930915; CA 1297078 C 19920310; DE 3671876 D1 19900719; DE 3688941 D1 19930930; DK 474286 A 19870404; DK 474286 D0 19861003; EP 0361535 A2 19900404; EP 0361535 A3 19900418; EP 0361535 B1 19930825; ES 2002516 A6 19880816; FI 863975 A0 19861001; FI 863975 A 19870404; FI 87443 B 19920930; FI 87443 C 19930111; GR 862490 B 19870203; NO 169164 B 19920210; NO 169164 C 19920520; NO 863937 D0 19861002; NO 863937 L 19870406; PT 83490 A 19870529; SE 8603106 D0 19860714; SE 8603106 L 19870404; US 4759743 A 19880726; US 4861170 A 19890829; US 4921746 A 19900501
DOCDB simple family (application)
EP 86850329 A 19861002; AT 86850329 T 19861002; AT 89119981 T 19861002; CA 519709 A 19861003; DE 3671876 T 19861002; DE 3688941 T 19861002; DK 474286 A 19861003; EP 89119981 A 19861002; ES 8602346 A 19861002; FI 863975 A 19861001; GR 860102490 A 19861002; NO 863937 A 19861002; PT 8349086 A 19861003; SE 8603106 A 19860714; US 18388588 A 19880420; US 18388688 A 19880420; US 91417986 A 19861001